Pet ring



FIG. 1 is a perspective view of a pet ring;

FIG. 2 is a partial enlarged cross-section view thereof taken along line 2-2 of FIG. 3;

FIG. 3 is a bottom view thereof;

FIG. 4 is a side view thereof; and,

FIG. 5 is a top view thereof. 

CLAIM The ornamental design for a pet ring, as shown and described. 